Gait analysis dedicated to Health Care

Locometrix® received a prize at the National Competition for the Creation of Innovative Companies Paris 1999 and 2001

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The LOCOMETRIX device This new gait analysis system is based on technology which is used in the aerospace industry: the measurement of accelerations. The apparatus includes three accelerometers, a microprocessor which records locomotor movement next to the centre of gravity.

The walking test The apparatus which is incorporated in an elastic belt is attached around the waist of the patient. This process takes less than one minute. The walking test can be carried out anywhere, for example in a long corridor, in a gymnasium, or on a stadium concourse.

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Important measurements related to Gait Quality Stride frequency its decrease gives an early prediction of Locomotor disorders

Left and right symmetry index a global index for asymmetrical pathology

An innovative software for very informative gait variables

Gait regularity a major indicator of Gait Quality independent of age and gender until the age of 70y ● correlated to clinical indices, gait regularity allows the grading of the gravity and severity of gait disorders ● major predictor of falling in elderly people ● ●

Medio-lateral instability the complementary measurement of gait regularity

Gait constraints the measure of the shock energy over the median lumbar region ● they are linked to neurological, and/or musculoskeletal disorders ● and predictive of gravity ●

Walking economy The total mechanical power allowed to calculate burnt calories

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Example of a walking test: Faller patient

Patient 77 year old man, healthy and active, with a recent history of a fall.

Energy assessment ● The total mechanical power is normal.

Stride Pattern Excellent walking speed, with a normal stride frequency and stride length.

Conclusion

Stride coordination ● Right and left steps are symmetric, ● Poor coordination characterized by a low regularity (239; normal value > 300).

The rehabilitation program has to take into account the decrease of the regularity, and to reinforce the stride coordination by means of proprioceptif exercises.

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Main validated applications For Rehabilitation Locometrix provides precise information according to gait abnormalities and gait adaptation mechanisms. Locometrix allows a more specific rehabilitation.

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For Gait deterioration and risk of fall Locometrix highlights the characteristics of gait deterioration: loss of speed, decrease of cadence and/or regularity. Physical activity programs can be individually adapted.

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For Obesity Locometrix assesses the walking economy according to walking speed, More effective training programs can be prescribed to the patient.

For Hip and Knee osteoarthritis - Locometrix precisely measures the gait function. - Locometrix provides a better under standing of gait adaptation. - Locometrix can be applied after total hip or knee replacement.

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For Neurological diseases Locometrix grades and subgroups neurological diseases such as Parkinson’s Disease, fibromyalgia, dementia… A better follow up can be achieved.

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Main publications Accelerometric gait analysis for use in hospital outpatients. Rev Rhum [Engl. Ed.], 1999; 66: 389-97

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Reference data for normal subjects obtained with an accelerometric device Gait and Posture, 2002; 16: 124-34

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Gait abnormalities in elderly fallers Journal of aging and physical activity, 2003; 11: 39-51

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Analyse des troubles de la marche par une méthode accélérométrique dans la maladie de Parkinson Revue Neurologique, 2003; 159: 786-9

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Gait analysis in coxarthrosis using an accelerometric device (abstract) Annals of the Rheumatic Diseases, 2004; 63, supplement 1: 365-6

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Gait regularity: measurement and significance (abstract) Gait and Posture, 2005; 21: S7

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Gait disorders in patients with fibromyalgia Joint Bone Spine, 2006; 73: 543-6

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Main customer references Medical applications Hospital Pontchaillou, Neurological and Rehabilitation Department, France Clinic of Valmont, Neurological and Rehabilitation Department, Switzerland Sports University of Evry, Exercice Physiology Laboratory, France National Rugby training center, Marcoussis, France Pharmaceutical Company Pierre Fabre Medicament, France Locometrix is a trademark of Centaure Metrix Technology issues from INRA researches, under exclusive license.

Centaure Metrix., Pepinière Genopole Entreprises, 4 rue Pierre Fontaine, 91058 Evry Cedex - France Tél: +33 (0)1.60.87.89.71 - Fax: +33 (0)1.60.87.89.99 S.A.S. CAPITAL 38.500 e - R.C.S. Montereau B 439 196 973 - T.V.A. N° FR 64 439 196 973

Contact web : www.locometrix.com E-mail : [email protected]